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From: "dan carpenter" <error27@email.com>
To: rml@tech9.net
Cc: linux-kernel@vger.kernel.org
Date: Fri, 22 Nov 2002 11:04:09 -0500
Subject: Re: calling schedule() from interupt context
Sender: linux-kernel-owner@vger.kernel.org
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From: Robert Love <rml@tech9.net>

> On Fri, 2002-11-22 at 03:54, dan carpenter wrote:
> 
> (Next time trim your CC list: none of those poor guys needed this
> email..)
> 

trimmed.

> > In drivers/net/tokenring/3c359.c xl_interrupt() calls schedule().
> > The path from xl_interupt to schedule is:
> > xl_rx ==> netif_rx ==> 
> > kfree_skb ==> __kfree_skb ==> 
> > secpath_put ==> __secpath_destroy ==> 
> > xfrm_state_put ==> __xfrm_state_destroy ==> xfrm_put_type ==> 
> > module_put ==> put_cpu ==> preempt_schedule ==> schedule
> 
> Are you actually seeing this code path or is this just what your script
> is showing you?
> 

ok.  I'm an idiot.

The script only checks things at compile time not at runtime.  So you are 
right, of course, that this couldn't happen in real life because of the
preemp_count.  

Thanks for the explanation...  

regards,
dan carpenter

-- 
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